60 to 220 MHz, ±50-ppb precision Super-TCXO

The SiT5349 is a ruggedized ±50-ppb Endura™ ultra-precision Super-TCXO with an acceleration sensitivity as low as 0.004 ppb/g. This device is engineered for harsh environments and is ideal for high-reliability aerospace and defense applications. By leveraging SiTime’s unique DualMEMS™ temperature sensing and TurboCompensation™ technology, the SiT5349 delivers the most stable timing in the presence of environmental stressors – airflow, temperature perturbation, vibration, shock, and electromagnetic interference (EMI).

This MEMS-based Endura Super-TCXO can be factory-programmed to any combination of frequency, stability, voltage, and pull range. This programmability enables designers to optimize the clock configuration while eliminating the long lead time and customization costs associated with quartz TCXOs where each frequency is custom built.

The SiT5349 conforms to MIL-PRF-55310 and MIL-STD-883 specifications.

View related products:1to 60 MHz

Six industry standard footprints as small as 5.0 x 3.2 mm
Oscillator Type TCXO-SE
Frequency 60 to 220 MHz
Frequency Stability (ppm) ±0.05
Phase Jitter (rms) 0.31 ps
Output Type LVCMOS
Operating Temperature Range (°C) 0 to +70
Pull Range (ppm) ±6.25, ±10, ±12.5, ±25, ±50, ±80, ±100, ±125, ±150, ±200, ±400, ±600, ±800, ±1600, ±3200
Voltage Supply (V) 2.5, 2.8, 3, 3.3
Package Type (mm²) 5.0 x 3.2 10-pin
特性 Ultra-low acceleration sensitivity, MIL-STD-55310, MIL-PRF-883
Availability Production

Up to 220 MHz output frequency

  • Eliminates need for frequency multipliers

Rugged performance under airflow, fast temp. ramp

  • ±50 ppb over-temp stability
  • 1.5e-11 ADEV at 10 second average time
  • ±1 ppb/°C frequency slope (ΔF/ΔT)
    • Ensures better system-level reliability of equipment operation in hostile environments

Best acceleration sensitivity

  • As low as 0.004 ppb/g

20x better phase noise under vibration

  • Minimizes call and/or link drops in high-vibration environments

0.2 ps/mV power supply noise rejection (PSNR)

  • Reduces BOM by eliminating a dedicated LDO for TCXO

LVCMOS或剪罪ewave output

  • Optimizes for best balance between EMI and jitter

Rich programmable features

  • Any frequency between 60 to 189 MHz and 200 to 220 MHz
  • 2.25 to 3.63 V
  • Large pull range from ±6.25 to ±3200 ppm:
    • Customize TCXO specifications for optimal system performance

Digital frequency tuning through I2C

  • Eliminate frequency shift caused by board noise

优越的reliability

  • 1 billion hours MTBF
  • Lifetime Warranty: Reduces repair costs and field failures due to clock components
  • Airborne communications
  • Small cells
  • Land mobile radio
  • Radar
  • Field communications
  • UAV communications
  • Vehicle comms/telemetry
  • Avionics
  • Airframe control
  • Engine management/control
  • Flight computer platform
  • Satellite base station
  • Satcom
  • GNSS/navigation
  • All ruggedized applications

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